Bicycle helmet



FIG. 1 is a top perspective view of a bicycle helmet showing my new design;

FIG. 2 is a bottom perspective view of the bicycle helmet of FIG. 1.

FIG. 3 is a front view of the bicycle helmet of FIG. 1.

FIG. 4 is a right side view of the bicycle helmet of FIG. 1.

FIG. 5 is a rear view of the bicycle helmet of FIG. 1.

FIG. 6 is a left side view of the bicycle helmet of FIG. 1.

FIG. 7 is a top view of the bicycle helmet of FIG. 1; and,

FIG. 8 is a bottom view of the bicycle helmet of FIG. 1.

The dash-dot-dash lines (which represent boundary lines) and the even dash lines form no part of the claimed design. 

CLAIM The ornamental design for a bicycle helmet, as shown and described. 